// JavaScript Document

var Include = function () {
  var Include = function (src) {
    var reg = null;
    for (var i = 0; reg = Include.registry[i]; i++) {
      if (reg.toLowerCase() == src.toLowerCase()) {
        return false;
      }
    }
    
    var head   = document.getElementsByTagName('head')[0];
    var script = document.createElement("script");
      
    script.src  = src.match(/^\//) ? src : Include.base + src;
    script.type = "text/javascript";
    script.language = "javascript";
      
    head.appendChild(script);
    return script;
  };
  
  Include.registry = [];
  Include.Once = function (src) {
    var script = Include(src);
    Include.registry[Include.registry.length] = src;
    return script;
  };
  
  var base     = document.getElementsByTagName("base")[0];
  Include.base = base ? base.href : "";
  
  return Include;
}();